The Green Honeycreeper is a green tanager that measures 17 cm (6.9 in) and weighs 17 g. One of the most distinctive features of this species is its slender, slightly decurved bill, which is mostly honey yellow with a yellow and black culmen. The male is a brighter, bluer green in color, with a broad black mask. Its chin is also black. The female has a grayish bill and the mandible is dull yellow. She has yellowish-green plumage in the upperparts, paler in the inferior parts, and darker eyes than the male. Nest built only by the female. Two white eggs with brown spots per clutch. Feeds on nectar, fruits, and insects.